Marek Kučera 
Only in one of the last articles we have informed, that Alaska has experienced with extremely cold start of Summer 2025 /https://mkweather.com/deadhorse-in-alaska-with-the-coldest-1st-decade-of-june-in-history-2-1c-28-2f-in-average-only//, but everything is going to change.
For the first time in its recorded history, Alaska has issued an official heat advisory, marking a historic milestone in the state’s climate record. This unprecedented alert reflects a growing trend of unusually high temperatures sweeping across the traditionally cool northern state.
🌡️ Breaking the Cool Barrier
Alaska, known for its cold Arctic climate, typically experiences mild summers with average highs ranging from 15°C to 25°C (59°F to 77°F) depending on the region. However, in late June 2025, meteorologists observed sustained temperatures climbing well above 30°C (86°F) in several interior and southern communities—including Fairbanks, Anchorage, and the Yukon River basin. The National Weather Service (NWS) issued the state’s first-ever heat advisory to warn residents about the dangers of prolonged heat exposure in an area unaccustomed to such warmth (NWS Alaska, 2025).
🔥 Why Is This Significant?
Heat advisories are common in lower latitudes, but in Alaska, they represent a new chapter in the climate narrative. The state’s infrastructure, public health systems, and ecosystems are not designed for extended hot spells. Key concerns include:
- Health risks: According to the Alaska Division of Public Health, cases of heat exhaustion and heat-related illnesses have surged during this heatwave, particularly affecting vulnerable groups like the elderly and children (Alaska DHSS, 2025).
- Wildfire danger: Hotter and drier conditions have increased wildfire risk across interior Alaska, as reported by the Alaska Wildfire Service’s seasonal outlook (Alaska Wildfire Service, 2025).
- Permafrost thaw: Scientists warn that thawing permafrost could destabilize infrastructure and release greenhouse gases, exacerbating warming (NOAA Arctic Report Card, 2025).
🌍 What’s Driving the Heat?
Several meteorological factors combined to produce this historic heat event:
- Jet stream alterations: A highly “wavy” jet stream pattern allowed warmer air masses to penetrate far north and stall over Alaska, as described in recent studies on Arctic atmospheric circulation (Francis and Vavrus, 2015).
- Arctic amplification: The Arctic is warming at more than twice the global average rate, intensifying heatwaves and disrupting weather patterns (NOAA Arctic Report Card, 2025).
- Persistent high pressure: A blocking high-pressure system brought clear skies and prolonged sunshine, further heating the surface.
📢 Public Response and Precautions
Authorities urged residents to stay hydrated, avoid strenuous outdoor activity during peak heat, and check on vulnerable neighbors. Emergency services prepared for potential wildfire outbreaks and increased heat-related medical emergencies (NWS Alaska, 2025).
Summary:
- Event: First-ever heat advisory issued in Alaska
- Date: Late June 2025
- Temperatures: Above 30°C (86°F) in multiple regions
- Implications: Health risks, wildfire danger, permafrost thaw
- Cause: Arctic amplification, jet stream shifts, blocking high pressure
Ilustration picture: https://www.nbcnews.com/mach/science/baked-alaska-record-high-temperatures-expected-during-unusual-heat-wave-ncna1026491
